Bosch WTV74105GB/12 Tumble Dryer Won’t Turn On

I will try and help with this problem about Bosch WTV74105GB/12 Tumble Dryer,

Hi Steve, I'm sorry to hear about your Bosch tumble dryer problem. If you think the PCB needs repair, there are a few steps to try first.

First, make sure the PCB is really the issue. Check the electronic filter at the back right side of the machine where the power wire enters. Ensure it has 240 volts. From there, two wires usually run to the PCB. Disconnect these from the PCB and test for 240 volts again. If you have 240 volts here, then the power supply, filter, and suppressor are fine. If no lights come on, it's likely a faulty PCB.

I've included diagrams of all parts below, along with genuine part numbers. At the bottom of the page, you'll find any spares I have for this machine. Unfortunately, I don't have a second-hand circuit board right now. You might check eBay using your model number for new or used options from other machines.

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